Home / 20,696.70-28,560.65-11,743.67

Finding the Fourth Proportional to 20,696.70, 28,560.65 and 11,743.67

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Solution

The fourth proportional to 20,696.70, 28,560.65 and 11,743.67 is: 16,205.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.70 : 28,560.65 = 11,743.67 : x
  2. Step 2: Convert to fraction form
    20,696.70/28,560.65 = 11,743.67/x
  3. Step 3: Cross multiply
    20,696.70x = 28,560.65 × 11,743.67
  4. Step 4: Simplify right side
    20,696.70x = 335,406,766.67
  5. Step 5: Solve for x
    x = 335,406,766.67/20,696.70
  6. Step 6: Final answer
    x = 16,205.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.